Watchmaker&#39;s staking-tool.



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UTTED STATES PATENT OFFICE.

LESTER J. VILLIAMS, OF LEBANON, NEV HAMPSHIRE, ASSIGNOR TO FRANK i B. KENDRICK AND WILLIAM F. DAVIS, OF LEBANON, NEW HAMPSHIRE,

PARTNERS TRADING AS TIIE FIRM OF KENDRIOK d: DAVIS.

WATCH NIAKERS STAKlNG-TOOL.

SPECIFICATION forming part of Letters Patent No. 707,887, dated August 26, 1902.

Application iiled May 10, 1902. Serial No. 106,748. (No model.)

To all whom it may concern: with the usual openings to permit the mount- Beit known that I, LESTER J. WILLIAMS, a ing thereon of the face-plate b and the escape citizen of the United States, residing at Lebaof the expelled staff. This base-plate also non, in the county of Grafton and State of carries the arm or gooseneck c, which has 55 5 New Hampshire, have invented certain new formed thereon the guide-sleeve d, the openand useful Improvements in Watchmakers ing in which is in alinement with the said es- Staking-Tools, of which the following is a cape-opening. The face-plate l) is provided specification, reference being had therein to with a central opening presenting a beveled the accompanying drawings,which formapart surface to increase the area of frictional con- 6o 1o of this specification. tact and insure a more perfect centering of My invention relates to improvements in the said plate, a vertical bearing-face, and a watchmalrers staking-tools, and has for its series ofgraduated openings equidistant from object the production of a tool of this chara common center to accommodate a punch or acter wherein the punch or plunger may be plunger or other tool of different diameters, 65 I5 sustained within its guide in any desired posaid plate being rotatable to permit said opensition relative to the base to permit it to be ings, respectively, to be brought into alinewithdrawn from and held free of the sta of ment with said escape-opening and said guidethe wheel without necessitating its complete sleeve. The face-plate?) is maintained in the withdrawal from the guide. proper position relative to said base a by 7o zo A further object is to provide atool wheremeans of the pivot-pin e, provided with a in the mechanism for setting the face-plate is conical head fitted to the opening in and iiush capable of adjustment to facilitate the aswith said plate. Extended through the lower sembling of the tool, to compensate for wear part of this pin is an opening adapted to rethrough use on the various parts, or to acceive a shaft f, having in its length areduced 75 25 commodate this action to the requirements of eccentric or cam portion f, acting in said the individual workman. opening, by means of which the pin e is drawn The invention consists in the novel feadownward or forced upward to bind said facetures of construction hereinafter set forth and plate against or release it f rom engagement described, and more particularly pointed out with the base a to set it or permit it to be ro- 8o 3o in the claims hereto appended. tated, respectively. This shaft fis seated in Referring to the accompanying drawings, abearing formed in the base a, said bearing Figure 1 is a side elevation, partly in secbeing on both sides of the opening for said tion, of a staking-tool embodying the prepivot-pin e. The reduced eccentric or cam ferred form of my invention. Fig. 2 is aplan portion f forms shoulders adapted to bear S5 3 5 view thereof. Fig. 3 is a View of the bottom upon reverse sides of the pivot-pin e to hold it of the face-plate detached from the base. in position. This shaft extends without said Fig. 4 is a view in perspective of the prebase, and its exposed endis equipped with a ferred form of the means for sustaining the knurled head by which it is manipulated. punch or plunger. Fig. 5 is a section on the The various parts are all finished and must be 9o 4o line 5 5 of Fig. l. Fig. 6 is a sectional view finelyadjusted,as the device mustact with the of the face-plate detached from the base. greatest accuracy. To facilitate such ad- Fig. 7 is a view showing a modified form of j ustment, I provide a compensating-screw g, the means for sustaining the punch or plunger. acting in the lower portion of the pivot-pin and Fig. 8 is a section on the line 8 8 of Eig. 7. against the eccentric or cam f', by means of 95 45 Fig. 9 is a View showing a still further modiwhich the throw of said cam maybe regulated fied form of said means, and Fig. lO is a plan so as to overcome any slight irregularities in view of the modification shown in Fig. 9. finish in assembling, wear from extensive use, Like letters refer to like Aparts throughout or to suit the individual-workman. Acting the several views. in the guide-sleeve d is a punch or plunger h, `roo 5o In the accompanying drawings, @indicates by means of which the staff is expelled from the base of the staking-tool, whichis provided the wheel. The guide-sleeve d is so arranged that said plunger may be sustained therein in any desired position relative to the faceplate, so as to be capable of being lifted free from the work to enable the temporary use of other tools without requiring the complete removal of the said plunger or punch.

In the preferred form of my invention, as shown in Figs. l, 2, and 4, I enlarge the upper portion of the guide-sleeve d and countersink therein a sleeve 1l, provided with a plurality of spring-tongues '12, carrying, respectively,a semicircular bearing-face, as 314, adapted to partially encompass and frictionally engage the punch or plunger h. This sleeve 't' may be secured within the guidesleeve d in any desired manner; but preferably it is made a driving fit.

In the modification shown in Figs. 7 and S I dispense with the sleeve t' and merely employ a plurality of spring-tongues, as j j', seated within the guide-sleeve d and partially encompassing the punch or plunger. These tongues are inserted through openings made in the guide-sleeve and are secured in this relation by means of a screw-plug 7c, bearing against their outer ends.

In the modification shown in Figs. 9 and 10 I provide a plurality of spring-tongues m lm m2, which extend obliquely downward from the top of the guide-sleeve d, penetrating a chamber therein `which is provided to permit a slight lateral movement of the lower ends of said springs. These tongues are secured in position in any desired manner; but preferably holes are drilled, and said tongues are driven therein, being a tight fit.

The operation of my staking-tool in so far as has not already been disclosed is as follows: The staff of the balance or other wheel having been fitted in the proper opening in the face-plate b, the clamping mechanism is released by means of the knurled head f4, which rotates the shaft f and the eccentric or cam portion thereof. rlhis forces the pivotpin e upward until it is freed from engagement with the face-plate b. The said plate is then rotated until the proper opening is in alinement with the escape-opening in the base and with the plunger guide sleeve. When it is properly centered, it is set in this position by reversing the action of the cam. If it is found that the throw of the cam is insucient to properly release or clamp said plate or that there is a tendency to give too much motion to these parts to accomplish the desired result, this may be remedied by resetting the screw g. A smooth action of this mechanism is assured by reason of the double bearing for the shaftj" and the shoulders f2 and f3, which are always in engagement with the pivot-pin e on reverse sides thereof, owing to the reduced diameter of the cam portion f'.

The operation of the sustaining springtongues is substantially identical in the preferred form of my invention and in each of the modifications herein shown and described.

As the punch or plunger is inserted in the guide-sleeve d its end will spread the springtongues, causing them `to engage the sides thereof. This engagement will be sufficient to sustain the weight of the punch or plunger, but will not interfere to any extent with its reciprocation while in use. If itbe desired to examine the work in hand, to employ other tools upon it before the complete expulsion of the staff, or to temporarily cease this operation for any other reason or purpose, it is merely necessary to raise the punch or plunger to the necessary height, and the spring-tongues will hold it in this position until it is desired to resume its use. This not only facilitates the work in hand, but obviates the necessity of a repeated refltting of the plunger to the guidesleeve and the resulting annoyance.

It is not my intention to limit my invention to the precise construction herein shown and described, as it is apparent that there may be many'deviations therefrom without departing from the spirit of my invention.

Having described the invention, what I claim as new, and desire to have protected by Letters Patent, is-

1. In a staking-tool, in combination a perforated base,a punch or plunger,a guide therefor, and means adapted to frictionally engage said punch or plunger whereby said punch or plunger may be sustained in said guide in any desired position relative to said base.

2. In a staking-tool, in combination a perforated base,a punch or plunger,a guide therefor, and means comprising a plurality of spring-tongues adapted to engage said punch or plunger whereby it may be sustained in said guide in any desired position relative to said base.

3. In a staking-tool, in combination a perforated base,a punch or plunger,a guide therefor, a means comprising a sleeve countersunk in said guide and a plurality of spring-tongues carried thereby and adapted to engage said punch or plunger whereby it may be sustained in said guide in any desired position relative to said base.

4. In a staking-tool, in combination a perforated base,a punch or plunger,aguide therefor, and means comprising a sleeve countersunk in said 4guide a plurality of springtongues carried thereby and bearing-surfaces carried by said tongues and adapted to engage said punch or plunger whereby it may be sustained in any desired position relative to said base.

5. In a staking-tool, in combination, a perforated base, a 4'punch or plunger, a rotatable face-plate carried by said base, a pivot-pin connecting said base and said plate, a cam whereby said pivot-pin is reciprocated to release or clamp said face-plate and means comprising an adjustable contact carried by said pivot-pin and acting against said cam whereby the throw of said pivot-pin by said cam may be regulated.

6. In a staking-tool, in combination, a per- IOO IIO

being reduced and eccentric, said portion being within the opening in said pivot-pin, whereby shoulders are formed to bear upon the reverse sides of said pivot-pin, and said face-plate may be released from or clamped against said base.

In Witness whereof I have hereunto set my hand, this 20th day of April, 1902, in the presence of two witnesses.

LESTER J. VILLIAMS.

Witnesses:

M. D. CoBLnIGH, N. M. BAKER. 

